Note 1 - Summary of Significant Accounting Policies - Noncurrent Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Total Property and Equipment, Net	$ 6,426	$ 9,581
Operating Lease Assets	8,998	4,827
Other assets	1,173	3,718
UNITED STATES
Total Property and Equipment, Net	5,057	8,024
Operating Lease Assets	5,574	1,213
Other assets	1,173	3,718
MEXICO
Total Property and Equipment, Net	681	961
Operating Lease Assets	3,117	3,425
Other assets
CHINA
Total Property and Equipment, Net	688	596
Operating Lease Assets	307	189
Other assets